paul you ciancia claims he acted alone. >> the procedures at the third largest airport inside terminal three at l.a.x. ben, good morning. >> reporter: margaret and charlie good morning. all nine terminals are back open this morning including terminal three where the shooting occurred. we're learning more about the shooter's motives and security here at l.a.x. >> tsa agents are wearing black bands in memory of hernandez, the first tsa employee killed in the line of duty flowers are placed yards from where the shooting took place. >> he had his gun trained down like this. he took two shots. >> reporter: scott greene was in the security line when paul ciancia started shooting at tsa agents. passengers ran out of the terminal as the shooter made his way toward the gate area. >> it didn't make sense to me. that guy had a gun. no one was there to stop him. police were outside. >> l.a.x. police shot the gun plan. the carpeting covered in blood has been replaced. $9.1 billion has been spent on security upgrades. armed police had been stationed at all security check points. earlier this year th